/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 06:55:16,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 06:55:16,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 06:55:17,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 06:55:17,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 06:55:17,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 06:55:17,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 06:55:17,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 06:55:17,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 06:55:17,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 06:55:17,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 06:55:17,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 06:55:17,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 06:55:17,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 06:55:17,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 06:55:17,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 06:55:17,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 06:55:17,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 06:55:17,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 06:55:17,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 06:55:17,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 06:55:17,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 06:55:17,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 06:55:17,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 06:55:17,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 06:55:17,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 06:55:17,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 06:55:17,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 06:55:17,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 06:55:17,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 06:55:17,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 06:55:17,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 06:55:17,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 06:55:17,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 06:55:17,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 06:55:17,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 06:55:17,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 06:55:17,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 06:55:17,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 06:55:17,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 06:55:17,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 06:55:17,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 06:55:17,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 06:55:17,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 06:55:17,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 06:55:17,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 06:55:17,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 06:55:17,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:55:17,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 06:55:17,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 06:55:17,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 06:55:17,091 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 06:55:17,091 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 06:55:17,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 06:55:17,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 06:55:17,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 06:55:17,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 06:55:17,393 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 06:55:17,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2021-05-01 06:55:17,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec3ec53f2/e73ea009738a4698918bfc6c3dcefdda/FLAG568f7ea6b [2021-05-01 06:55:17,820 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 06:55:17,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2021-05-01 06:55:17,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec3ec53f2/e73ea009738a4698918bfc6c3dcefdda/FLAG568f7ea6b [2021-05-01 06:55:18,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec3ec53f2/e73ea009738a4698918bfc6c3dcefdda [2021-05-01 06:55:18,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 06:55:18,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 06:55:18,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 06:55:18,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 06:55:18,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 06:55:18,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82a5571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18, skipping insertion in model container [2021-05-01 06:55:18,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 06:55:18,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 06:55:18,359 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c[373,386] [2021-05-01 06:55:18,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:55:18,379 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 06:55:18,425 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c[373,386] [2021-05-01 06:55:18,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:55:18,458 INFO L208 MainTranslator]: Completed translation [2021-05-01 06:55:18,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18 WrapperNode [2021-05-01 06:55:18,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 06:55:18,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 06:55:18,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 06:55:18,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 06:55:18,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... [2021-05-01 06:55:18,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 06:55:18,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 06:55:18,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 06:55:18,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 06:55:18,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:55:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 06:55:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 06:55:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 06:55:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 06:55:18,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 06:55:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 06:55:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 06:55:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 06:55:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 06:55:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-01 06:55:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 06:55:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 06:55:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 06:55:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 06:55:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 06:55:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 06:55:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 06:55:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 06:55:18,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 06:55:18,783 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 06:55:18,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:55:18 BoogieIcfgContainer [2021-05-01 06:55:18,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 06:55:18,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 06:55:18,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 06:55:18,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 06:55:18,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 06:55:18" (1/3) ... [2021-05-01 06:55:18,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48703a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:55:18, skipping insertion in model container [2021-05-01 06:55:18,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:55:18" (2/3) ... [2021-05-01 06:55:18,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48703a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:55:18, skipping insertion in model container [2021-05-01 06:55:18,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:55:18" (3/3) ... [2021-05-01 06:55:18,790 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2021-05-01 06:55:18,793 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 06:55:18,796 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 06:55:18,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 06:55:18,819 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 06:55:18,819 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 06:55:18,819 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 06:55:18,819 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 06:55:18,820 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 06:55:18,820 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 06:55:18,820 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 06:55:18,820 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 06:55:18,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:55:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 06:55:18,835 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:55:18,835 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:55:18,835 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:55:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:55:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash -154663714, now seen corresponding path program 1 times [2021-05-01 06:55:18,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:55:18,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30474619] [2021-05-01 06:55:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:55:18,884 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:55:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:18,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:18,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:18,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:18,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:55:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:19,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:55:19,017 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:55:19,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30474619] [2021-05-01 06:55:19,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [30474619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:55:19,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:55:19,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 06:55:19,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108020232] [2021-05-01 06:55:19,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 06:55:19,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:55:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 06:55:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:55:19,034 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:55:19,074 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-05-01 06:55:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 06:55:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 06:55:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:55:19,082 INFO L225 Difference]: With dead ends: 39 [2021-05-01 06:55:19,082 INFO L226 Difference]: Without dead ends: 22 [2021-05-01 06:55:19,083 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 06:55:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-01 06:55:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-01 06:55:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2021-05-01 06:55:19,128 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 11 [2021-05-01 06:55:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:55:19,129 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2021-05-01 06:55:19,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2021-05-01 06:55:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 06:55:19,129 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:55:19,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:55:19,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 06:55:19,130 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:55:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:55:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash -213769058, now seen corresponding path program 1 times [2021-05-01 06:55:19,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:55:19,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310963620] [2021-05-01 06:55:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:55:19,133 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:55:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:19,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:19,205 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 06:55:19,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:55:19,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:55:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:19,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:55:19,271 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:55:19,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310963620] [2021-05-01 06:55:19,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310963620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:55:19,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:55:19,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 06:55:19,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875993610] [2021-05-01 06:55:19,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 06:55:19,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:55:19,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 06:55:19,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 06:55:19,277 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:55:19,391 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2021-05-01 06:55:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 06:55:19,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 06:55:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:55:19,394 INFO L225 Difference]: With dead ends: 29 [2021-05-01 06:55:19,394 INFO L226 Difference]: Without dead ends: 24 [2021-05-01 06:55:19,395 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 06:55:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-01 06:55:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-05-01 06:55:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2021-05-01 06:55:19,408 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 11 [2021-05-01 06:55:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:55:19,408 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2021-05-01 06:55:19,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2021-05-01 06:55:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 06:55:19,411 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:55:19,411 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:55:19,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 06:55:19,411 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:55:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:55:19,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1726513949, now seen corresponding path program 1 times [2021-05-01 06:55:19,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:55:19,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395620376] [2021-05-01 06:55:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:55:19,424 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-01 06:55:19,430 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,439 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,442 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,447 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,448 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:55:19,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:55:19,454 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:55:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:19,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:19,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:19,517 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 06:55:19,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:55:19,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:55:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:19,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:55:19,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:19,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:55:19,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,594 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 06:55:19,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,603 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:55:19,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395620376] [2021-05-01 06:55:19,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [395620376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:55:19,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:55:19,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 06:55:19,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873003515] [2021-05-01 06:55:19,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 06:55:19,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:55:19,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 06:55:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 06:55:19,607 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:55:19,771 INFO L93 Difference]: Finished difference Result 41 states and 63 transitions. [2021-05-01 06:55:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-01 06:55:19,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-01 06:55:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:55:19,772 INFO L225 Difference]: With dead ends: 41 [2021-05-01 06:55:19,772 INFO L226 Difference]: Without dead ends: 25 [2021-05-01 06:55:19,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:55:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-01 06:55:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-01 06:55:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-05-01 06:55:19,784 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 36 transitions. Word has length 22 [2021-05-01 06:55:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:55:19,784 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-05-01 06:55:19,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2021-05-01 06:55:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 06:55:19,785 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:55:19,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:55:19,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 06:55:19,785 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:55:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:55:19,785 INFO L82 PathProgramCache]: Analyzing trace with hash 715396699, now seen corresponding path program 1 times [2021-05-01 06:55:19,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:55:19,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383854352] [2021-05-01 06:55:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:55:19,791 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-01 06:55:19,805 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,807 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,810 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,812 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,813 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:55:19,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:55:19,818 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:55:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:19,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:19,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:19,851 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 06:55:19,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:55:19,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:55:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:19,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:55:19,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:19,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:55:19,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,912 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 06:55:19,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:19,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:19,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:19,950 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:55:19,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383854352] [2021-05-01 06:55:19,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1383854352] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:55:19,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:55:19,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 06:55:19,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288328104] [2021-05-01 06:55:19,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 06:55:19,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:55:19,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 06:55:19,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:55:19,966 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:55:20,126 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-05-01 06:55:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 06:55:20,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-01 06:55:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:55:20,127 INFO L225 Difference]: With dead ends: 45 [2021-05-01 06:55:20,127 INFO L226 Difference]: Without dead ends: 29 [2021-05-01 06:55:20,128 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-01 06:55:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-01 06:55:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-01 06:55:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-05-01 06:55:20,134 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 22 [2021-05-01 06:55:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:55:20,134 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-05-01 06:55:20,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-05-01 06:55:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 06:55:20,135 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:55:20,135 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:55:20,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 06:55:20,136 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:55:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:55:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash 694793691, now seen corresponding path program 1 times [2021-05-01 06:55:20,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:55:20,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484758224] [2021-05-01 06:55:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:55:20,138 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-01 06:55:20,139 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,143 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,145 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,145 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:55:20,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:55:20,150 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:55:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:20,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:20,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:20,173 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 06:55:20,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:55:20,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:55:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:20,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:55:20,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:20,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:55:20,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,209 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 06:55:20,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,227 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 06:55:20,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,231 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 06:55:20,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,243 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:55:20,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484758224] [2021-05-01 06:55:20,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [484758224] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:55:20,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:55:20,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-01 06:55:20,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894580147] [2021-05-01 06:55:20,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-01 06:55:20,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:55:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-01 06:55:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-01 06:55:20,244 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:55:20,435 INFO L93 Difference]: Finished difference Result 47 states and 70 transitions. [2021-05-01 06:55:20,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 06:55:20,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-01 06:55:20,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:55:20,437 INFO L225 Difference]: With dead ends: 47 [2021-05-01 06:55:20,437 INFO L226 Difference]: Without dead ends: 31 [2021-05-01 06:55:20,439 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-01 06:55:20,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-01 06:55:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-01 06:55:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-05-01 06:55:20,453 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 22 [2021-05-01 06:55:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:55:20,453 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-05-01 06:55:20,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-05-01 06:55:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 06:55:20,455 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:55:20,455 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:55:20,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 06:55:20,455 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:55:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:55:20,456 INFO L82 PathProgramCache]: Analyzing trace with hash 565505435, now seen corresponding path program 1 times [2021-05-01 06:55:20,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:55:20,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392473034] [2021-05-01 06:55:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:55:20,459 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-01 06:55:20,461 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,469 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,470 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 06:55:20,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 06:55:20,477 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:55:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:20,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:20,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:20,528 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-05-01 06:55:20,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 06:55:20,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:55:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:55:20,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:55:20,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:55:20,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-05-01 06:55:20,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:55:20,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,647 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 06:55:20,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:55:20,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,670 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 06:55:20,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 06:55:20,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:55:20,698 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:55:20,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392473034] [2021-05-01 06:55:20,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [392473034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:55:20,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:55:20,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-01 06:55:20,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989327787] [2021-05-01 06:55:20,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 06:55:20,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:55:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 06:55:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-01 06:55:20,699 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:55:20,965 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2021-05-01 06:55:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 06:55:20,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-01 06:55:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:55:20,966 INFO L225 Difference]: With dead ends: 49 [2021-05-01 06:55:20,966 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 06:55:20,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 241.0ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-01 06:55:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 06:55:20,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-01 06:55:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2021-05-01 06:55:20,972 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 22 [2021-05-01 06:55:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:55:20,973 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2021-05-01 06:55:20,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:55:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2021-05-01 06:55:20,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 06:55:20,973 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:55:20,973 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:55:20,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 06:55:20,974 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:55:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:55:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash 622763737, now seen corresponding path program 1 times [2021-05-01 06:55:20,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:55:20,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889797616] [2021-05-01 06:55:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:55:20,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:20,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 06:55:20,985 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= (mod v_main_~y~0_28 2) 0)) (< (mod v_main_~x~0_130 4294967296) 99)) InVars {main_~x~0=v_main_~x~0_130, main_~y~0=v_main_~y~0_28} OutVars{main_~x~0=v_main_~x~0_130, main_~y~0=v_main_~y~0_28} AuxVars[] AssignedVars[] [2021-05-01 06:55:20,991 WARN L240 tifierPushTermWalker]: treesize reduction 20, result has 78.5 percent of original size [2021-05-01 06:55:20,993 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,017 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 78.4 percent of original size [2021-05-01 06:55:21,066 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,073 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,093 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,098 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 78.4 percent of original size 40 [2021-05-01 06:55:21,100 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 06:55:21,109 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,113 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,115 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,120 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,145 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,150 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,156 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,167 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-05-01 06:55:21,169 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 06:55:21,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,196 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,201 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,208 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,224 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,227 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:55:21,231 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,235 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,238 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,241 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,244 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,248 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,249 WARN L245 tifierPushTermWalker]: treesize reduction 20, result has 78.5 percent of original size 73 [2021-05-01 06:55:21,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:55:21,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:55:21,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 06:55:21,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 06:55:21,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:55:21,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 06:55:21,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-05-01 06:55:21,380 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 06:55:21,387 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* 5 .aux_div_v_it_5_58.0) (* 4294967290 main_~x~0_5) (* (- 4294967291) .aux_div_aux_mod_v_it_5_58_93.1) 4294967296) 0) [2021-05-01 06:55:21,387 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~x~0_5 (- .aux_div_v_it_5_58.0) (- .aux_div_aux_mod_v_it_5_58_93.1) 1) 0)) [2021-05-01 06:55:21,387 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* 5 .aux_div_v_it_5_58.0) (* 4294967290 main_~x~0_5) (* (- 4294967291) .aux_div_aux_mod_v_it_5_58_93.1) 99) 0)) [2021-05-01 06:55:21,388 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (- main_~x~0_5))) (+ .aux_div_v_it_5_58.0 .aux_div_aux_mod_v_it_5_58_93.1 .cse0 (- (div (+ .cse0 main_~x~0_6) (- 5))) 1)) 0)) [2021-05-01 06:55:21,390 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (<= (+ (* 5 .aux_div_v_it_5_58.2) (* 4294967290 main_~x~0_5) (* (- 4294967291) .aux_div_aux_mod_v_it_5_58_93.3) 4294967296) 0) [2021-05-01 06:55:21,390 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~x~0_5 (- .aux_div_v_it_5_58.2) (- .aux_div_aux_mod_v_it_5_58_93.3) 1) 0)) [2021-05-01 06:55:21,390 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* 5 .aux_div_v_it_5_58.2) (* 4294967290 main_~x~0_5) (* (- 4294967291) .aux_div_aux_mod_v_it_5_58_93.3) 99) 0)) [2021-05-01 06:55:21,390 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (- main_~x~0_5))) (+ .aux_div_v_it_5_58.2 .aux_div_aux_mod_v_it_5_58_93.3 .cse0 (- (div (+ .cse0 main_~x~0_6) (- 5))) 1)) 0)) [2021-05-01 06:55:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2021-05-01 06:55:21,417 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 06:55:21,418 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 06:55:21,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 06:55:21,431 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 06:55:21,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 06:55:21 BoogieIcfgContainer [2021-05-01 06:55:21,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 06:55:21,432 INFO L168 Benchmark]: Toolchain (without parser) took 3186.72 ms. Allocated memory was 206.6 MB in the beginning and 266.3 MB in the end (delta: 59.8 MB). Free memory was 171.7 MB in the beginning and 152.5 MB in the end (delta: 19.2 MB). Peak memory consumption was 79.3 MB. Max. memory is 8.0 GB. [2021-05-01 06:55:21,432 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 188.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 06:55:21,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.88 ms. Allocated memory is still 206.6 MB. Free memory was 171.5 MB in the beginning and 189.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-01 06:55:21,432 INFO L168 Benchmark]: Boogie Preprocessor took 37.69 ms. Allocated memory is still 206.6 MB. Free memory was 189.8 MB in the beginning and 188.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 06:55:21,433 INFO L168 Benchmark]: RCFGBuilder took 286.59 ms. Allocated memory is still 206.6 MB. Free memory was 188.0 MB in the beginning and 172.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 06:55:21,433 INFO L168 Benchmark]: TraceAbstraction took 2645.53 ms. Allocated memory was 206.6 MB in the beginning and 266.3 MB in the end (delta: 59.8 MB). Free memory was 171.2 MB in the beginning and 152.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2021-05-01 06:55:21,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 206.6 MB. Free memory is still 188.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 212.88 ms. Allocated memory is still 206.6 MB. Free memory was 171.5 MB in the beginning and 189.8 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.69 ms. Allocated memory is still 206.6 MB. Free memory was 189.8 MB in the beginning and 188.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 286.59 ms. Allocated memory is still 206.6 MB. Free memory was 188.0 MB in the beginning and 172.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2645.53 ms. Allocated memory was 206.6 MB in the beginning and 266.3 MB in the end (delta: 59.8 MB). Free memory was 171.2 MB in the beginning and 152.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L19] x++ [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 [L17] COND FALSE !(x < 99) [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2603.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 12.1ms, AutomataDifference: 987.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 154 SDtfs, 165 SDslu, 88 SDs, 0 SdLazy, 451 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 361.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 71 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 731.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 79.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...